The J(2)-J(1) E methanol transitions for J>=12 in Orion KL
文献类型：期刊论文
| 作者 | Wilson, TL; Zeng, Q; Huttemeister, S; Dahmen, G |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 1996-03-01 |
| 卷号 | 307期号:1页码:209-214 |
| 关键词 | masers molecular data ISM, individual, Orion KL, molecules radio lines, ISM |
| ISSN号 | 0004-6361 |
| 英文摘要 | The first astronomical measurements of the J(k) = 12(2) - 12(1), 14(2) - 14(1), 15(2) - 15(1), 16(2) - 16(1), and 17(2) - 17(1) transitions of E type methanol are presented. Corrections to the line rest frequencies are significant. A map of the averaged J = 15 to 17 lines shows that the emission arises from a region of 35 ''(delta) by similar to 20 ''(alpha) FWHP size, centered similar to 7 '' south, <2 '' west of the Hot Core. This is the Methanol Emission Center; the most intense CH3OH masers are 15 '' to the NW. The J greater than or equal to 12 profiles are adequately fitted with two gaussian velocity components with FWHP Delta upsilon(1/2) approximate to 0.8 km s(-1) and approximate to 3 km s(-1). For the wider component, our data give a rotational temperature of similar to 100 K. Excitation calculations indicate that the J(2) - J(1) populations are inverted; the narrow velocity component in the J = 15 to 17 transitions may be a low gain maser. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SUBMILLIMETER-WAVE SPECTRUM ; MILLIMETER-WAVE ; MASERS ; GHZ ; LINES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:A1996TZ45200027 |
| 公开日期 | 2013-02-05 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/8462]  |
| 专题 | 紫金山天文台_期刊（老文献） |
| 作者单位 | 1.PURPLE MT OBSERV, NANJING 210008, PEOPLES R CHINA 2.HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA |
| 推荐引用方式 GB/T 7714 | Wilson, TL,Zeng, Q,Huttemeister, S,et al. The J(2)-J(1) E methanol transitions for J>=12 in Orion KL[J]. ASTRONOMY & ASTROPHYSICS,1996,307(1):209-214. |
| APA | Wilson, TL,Zeng, Q,Huttemeister, S,&Dahmen, G.(1996).The J(2)-J(1) E methanol transitions for J>=12 in Orion KL.ASTRONOMY & ASTROPHYSICS,307(1),209-214. |
| MLA | Wilson, TL,et al."The J(2)-J(1) E methanol transitions for J>=12 in Orion KL".ASTRONOMY & ASTROPHYSICS 307.1(1996):209-214. |
入库方式： OAI收割
来源：紫金山天文台
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